Nitrogen, liquid

Market market for nitrogen, liquid, RER: the inventory of 1 kilogram of its reference product, attributional, cut-off.

market:nitrogen/lin:RERReport a problem with this dataset
Research outputAn inventory from a research design at the design maturity its process states, not verified plant data: check its calculation maturity and review status before use. Background activities are referenced by name only; no background data is included. All caveats

What it is

Market of Nitrogen, liquid in RER (production-mix), markets/nitrogen.yaml.

Reference product
1 kilogram of Nitrogen, liquid
Chemical
nitrogen · grade lin
CAS
7727-37-9
Code
market:nitrogen/lin:RER
Activity UUID
not available (the library assigns none; use the code)
Database
cheme-as-code-atlas-preview-c3ab348 (version preview-c3ab348)
Geography
RER
Time period
not available
Technology
not available
Classification
not available
System model
attributional, cut-off (docs/system-model.md, methodology 1.1.0)

Exchanges per 1 kilogram of Nitrogen, liquid

As exported: allocated and scaled to the reference product. Provenance: 1 calculated, 1 assumed. Pedigree scores (1 best, 5 worst): reliability, completeness, temporal correlation, geographical correlation, further technological correlation.

InputAmountUnitProvenancePedigreeLinked to
Supplier Cryogenic air separation unit (500 t/d GOX), share 1
supplier:asu-1
ASU-1 LCI dataset (processes/asu-1/lca/dataset.yaml): product:LIN 470 kg per hour of operation, times 8400 h/a (process.yaml basis.operating_hours_per_year).
1.015kilogramcalculatednoneAtlas (supply): Cryogenic air separation unit (500 t/d GOX) (Nitrogen, liquid, GLO)
compatible: grade nitrogen/lin (Nitrogen, liquid); unit kilogram; system model cutoff (one database); allocation exergy (physical-exergy); boundary plant gate, into the market
cryogenic-trailer 100 km
distribution:cryogenic-trailer
ASSUMED one-way distance from the air separation plant to the customer by cryogenic road tanker, a round screening placeholder: no open source with the delivery distance of merchant liquid oxygen or nitrogen in Europe was found. TODO: check whether the standard transport distances of ecoinvent v2 (Frischknecht et al. 2007, ecoinvent report No. 1) give 100 km by road for chemicals (unverified, not a citation), or replace the value with a cited distance.
0.1015ton kilometerassumednonemarket for transport, freight, lorry, unspecified (transport, freight, lorry, unspecified, RER) in your background (default ecoinvent-3.11-cutoff)

Elementary flows

No elementary flows are exported for this activity.

Market

Layer
production-mix · RER (markets/nitrogen.yaml)
Taken from suppliers
1.015 kilogram per kilogram delivered (losses on the way)
Suppliers
Nitrogen, liquid 100 %
Consumption
No trade data is packaged (UN Comtrade and CEPII BACI report HS 2804.30 nitrogen without telling liquid from gas, and their terms are not yet checked for redistribution), so the consumption mix is taken equal to the production mix.
FactValueStatusSource
suppliers[0] asu-1 production_volume3,948 t/acalculatedASU-1 LCI dataset (processes/asu-1/lca/dataset.yaml): product:LIN 470 kg per hour of operation, times 8400 h/a (process.yaml basis.operating_hours_per_year).
distribution cryogenic-trailer100 kmassumedASSUMED one-way distance from the air separation plant to the customer by cryogenic road tanker, a round screening placeholder: no open source with the delivery distance of merchant liquid oxygen or nitrogen in Europe was found. TODO: check whether the standard transport distances of ecoinvent v2 (Frischknecht et al. 2007, ecoinvent report No. 1) give 100 km by road for chemicals (unverified, not a citation), or replace the value with a cited distance.
loss boil-off0.005 kg/kgassumedASSUMED 0.5 % of the load lost as boil-off on the road and while the tanker waits: vacuum-insulated tankers vent the heat leak as vapour. No open source with a value per delivery was found.
loss transfer0.01 kg/kgassumedASSUMED 1 % of the load lost on transfer to the customer's tank (cool-down of the transfer hose and pump, flash on filling). No open source with a value was found.

Not exported:

  • loss:boil-off 0.00507588 kilogram per kilogram released as N2 (an atmospheric constituent, as lci/mappings.yaml pass_through: no burden, not exported)
  • loss:transfer 0.010101 kilogram per kilogram released as N2 (an atmospheric constituent, as lci/mappings.yaml pass_through: no burden, not exported)

Outside the market:

  • The customer's storage tank, its boil-off and the vaporiser: the consumer's own system.
  • The producer's liquid storage: ASU-1's LIN leaves the plant dataset at the tank (stream S11), whose boil-off is not counted.

Used by

No other activity of this database links to it.

How good it is

Review
not available
Data quality
not available
Mass and carbon closure
Not available: a market (markets/): its losses are stated as fractions, not balanced
Change report
Not available: this build has no change report against an earlier release.

KPI benchmark positions

Not available: no benchmarked KPI for this dataset.

How to use it

Downloads

A file with this activity alone is not available: each file above is the whole database, and the line under it says how to find this activity there.

import bw2data as bd
from cheme_as_code_lci import install

bd.projects.set_current("my-project")   # holds your licensed background + biosphere3
install("cheme-as-code-atlas-preview-c3ab348.xlsx", background="ecoinvent-3.11-cutoff", location="DE")
activity = bd.get_activity(("cheme-as-code-atlas-preview-c3ab348", "market:nitrogen/lin:RER"))

While any exchange of the database has no mapping, install() writes nothing and only lists the unlinked exchanges. So the last line finds no activity until the gaps are mapped: the download section gives the ways to use the database now.

How to cite

market for nitrogen, liquid, RER, ChemE-as-Code Process Atlas LCI database preview-c3ab348, activity market:nitrogen/lin:RER. Cite the Process Atlas paper (in preparation, 2026), by Artur M. Schweidtmann and Jana M. Weber, and the ChemE-as-Code Process Atlas LCI database version preview-c3ab348.

DOI: none yet (the Process Atlas paper is in preparation)

For the data, cite the Process Atlas paper; for the platform that builds and checks it, the ChemE-as-Code paper.

Schweidtmann, A. M. & Weber, J. M. (2026, in preparation). Process Atlas: an open, git-native, reproducible library and life cycle inventory of chemical processes (working title).

BibTeX
@unpublished{schweidtmann_process_atlas,
  author = {Schweidtmann, Artur M. and Weber, Jana M.},
  title = {{Process Atlas: an open, git-native, reproducible library and life cycle inventory of chemical processes (working title)}},
  year = {2026},
  url = {https://atlas.cheme-as-code.org},
  note = {in preparation}
}

Schweidtmann, A. M. (2026, in preparation). ChemE-as-Code: An Open-Source Platform for AI-Accelerated Chemical Process Engineering (working title).

BibTeX
@unpublished{schweidtmann_cheme_as_code,
  author = {Schweidtmann, Artur M.},
  title = {{ChemE-as-Code: An Open-Source Platform for AI-Accelerated Chemical Process Engineering (working title)}},
  year = {2026},
  url = {https://cheme-as-code.org},
  note = {in preparation}
}